The complex management of basic sanitation in large cities has played an extremely important role over the years due to the worsening of the environmental situation due to anthropic action, and the issue of sanitary sewage follows this trend. In this context, the present work evaluated, under a technical and operational approach, the Sewage Treatment Plants (STP) of the North Sector of the UFAM Manaus campus, in order to contribute with aspects related to the efficiency of sanitary sewage treatment. For this, critical analyzes were carried out on aspects of the technical design data, the sizing of the system's constituent units, the characterization of the existing system and the operational and maintenance aspect, in view of the functioning and efficiency of the STP. It is noteworthy that analyzes of laboratory reports on the quality of raw sewage and treated effluent, made available by the institutional sector responsible for the operation of the STP, were also included. The results showed that the constituent units are undersized when considering 2017 data and the technical standards on the subject. In addition, the current degraded state of conservation of the STP reveals that there is no periodic maintenance at the location, even though there is a manual for preventive, corrective and cleaning maintenance, which can compromise the operation and efficiency of the treatment units. In view of this, the identification and description of STP’s typology, the characterization of the system through the preparation of technical drawings and "as built" and the partial monitoring analysis of the final quality of the treated effluent subsidized sufficient elements to propose possible improvements in the treatment system for the purpose of optimizing the efficiency of the plant and providing, in general, information to the system managers about these possible negotiations.
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